<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator="/">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card :gutter="20">
        <el-row :gutter="10">
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                    <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="goAddPage">添加商品</el-button>
            </el-col>
        </el-row>

        <!-- table表格区 -->
        <el-table :data="goodsList" style="width: 100%">
            <el-table-column type="index"> </el-table-column>
            <el-table-column prop="goods_name" label="商品名称" width="width"> </el-table-column>
            <el-table-column prop="goods_price" label="商品价格/元" width="95px"> </el-table-column>
            <el-table-column prop="goods_weight" label="商品重量" width="70px"> </el-table-column>
            <el-table-column prop="add_time" label="商品创建时间" width="140px"> 
                <template slot-scope="scope">
                    {{scope.row.add_time | dateFormat}}
                </template>
            </el-table-column>
 
            <!-- 操作区，需要使用作用域插槽 -->
            <el-table-column label="操作" width="130px">
                <template slot-scope="scope">
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
                </template>
            </el-table-column>
        </el-table>  
    </el-card>

    <!-- 分页区 -->
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[5, 10, 15, 20]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
  
  </div>
</template>

<script>
    export default {
        data(){
            return{
                // 请求商品列表时需要使用到的参数
                queryInfo:{
                    query:'',
                    pagenum:1,
                    pagesize:10
                },

                // 获取到的商品列表
                goodsList:[],

                // 总数据条数，供分页使用
                total:1,
            }
        },

        created(){
            this.getGoodsList();
            console.log(this.goodsList)
        },

        methods:{
            // 根据分页获取对应的商品列表
            async getGoodsList(){
                const {data:res} = await this.$http.get('goods',{params:this.queryInfo});
                if(res.meta.status!==200) return this.$message.error('获取商品列表失败');
                this.goodsList = res.data.goods;
                this.total = res.total;
                /* this.$message.success('获取商品列表成功'); */
                // console.log(res.data);
            },

            // 分页大小改变时
            handleSizeChange(newSize){
                this.queryInfo.pagesize = newSize;
                this.getGoodsList();
            },

            // 当前页码改变时
            handleCurrentChange(newPage) {
                this.queryInfo.pagenum = newPage;
                this.getGoodsList();
            },

            // 删除商品数据
            async removeById(id) {
                const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
                }).catch(err=>err);

                if(confirmResult!=='confirm') return this.$message.info('已取消删除');

                const {data:res} = await this.$http.delete(`goods/${id}`);
                if(res.meta.status!==200) return this.$message.error('删除商品失败');

                this.$message.success('删除商品成功')
                this.getGoodsList();

            }, 

            // 点击添加商品，跳转到添加页面
            goAddPage(){
                this.$router.push('/goods/add');
            },

           

        }
    }
</script>

<style lang="less" scoped>

</style>